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What causes a chemical reaction to happen?

There are two aspects to this question: thermodynamics and kinetics. It is a fundamental law that the entropy of the universe must increase for a process to be feasible. This implies that the Gibbs Free Ener...
JL
Answered by Jacob L. • Chemistry tutor
3745 Views

Why would someone's hand jerk back when they touch something hot?

This phenomenon is called the 'jerk reflex' and is controlled by an electrical pathway along the nerves in your body. Once the hot object makes contact or comes close to the skin receptors will pick up the s...
KC
Answered by Kayden C. • Biology tutor
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我妈妈要我做一个医生，可是我想做个作家。Question: What job does the speaker want to do?

The speaker wants to become a writer, however his mother wants him to become a doctor.
ER
Answered by Eloise R. • Mandarin tutor
3012 Views

Find the co ordinates and nature of the turning points of the curve C withe equation, y=2x^3-5x^2-4x+2

Firstly, Differentiate the equation to find dy/dx. (dy/dx = 6x^2-10x-4)dy/dx shows the rate of change of the curve at a point, so at the stationary point dy/dx =0. So, put dy/dx = 0 and solve using factorisa...
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Answered by Asha K. • Maths tutor
10386 Views

How can donepezil improve communication between nerve cells?

Donepezil is an inhibitor of the enzyme acetylcholinesterase. Acetylcholine is a neurotransmitter that diffuses across synapses, binds to the acetylcholine receptor and causes sodium ion channels to open. In...
SW
Answered by Sarah W. • Biology tutor
6474 Views